Dbpc Trademarks

DBPC
POLYALKYL HYDROXYBENZENE-NAMELY, DI-TERTIARY-BUTYL-PARA-CRESOL
Expired  ·  November 7, 1957  ·  72040237  · 
DBPC
POLYALKYL HYDROXYBENZENE NAMELY, DI-TERTIARY-BUTYLPART-CRESOL
Expired  ·  January 3, 1952  ·  71623146  ·